1 files changed, 5 insertions, 1 deletions
diff --git a/tests/test_file.py b/tests/test_file.py
index 22a34aca..a6ff69e9 100755
--- a/tests/test_file.py
+++ b/tests/test_file.py
@@ -70,13 +70,17 @@ class BufferedFileTest (unittest.TestCase):
 
     def test_2_readline(self):
         f = LoopbackFile('r+U')
-        f.write(b'First line.\nSecond line.\r\nThird line.\nFinal line non-terminated.')
+        f.write(b'First line.\nSecond line.\r\nThird line.\n' + 
+                b'Fourth line.\nFinal line non-terminated.')
+        
         self.assertEqual(f.readline(), 'First line.\n')
         # universal newline mode should convert this linefeed:
         self.assertEqual(f.readline(), 'Second line.\n')
         # truncated line:
         self.assertEqual(f.readline(7), 'Third l')
         self.assertEqual(f.readline(), 'ine.\n')
+        # newline should be detected and only the fourth line returned
+        self.assertEqual(f.readline(39), 'Fourth line.\n')
         self.assertEqual(f.readline(), 'Final line non-terminated.')
         self.assertEqual(f.readline(), '')
         f.close()